once you load the action setup, choose to look through the correct camera (it defaults to camera 1 so this needs to be changed), then make sure the data is not slipping, sometimes cameras come in with a 1 frame offset so its best to check this first.
Then make sure icons are turned on and you should see all of your axis moving in relation to the camera,
to place something at one of the axis positions select one of axis then toggle to schematic and it should still be highlighted, make your image a child of this axis and then scale to the appropriate size,
If a proper coordinate system was not set up in Boujou you could have some crazy values